Question

Trigger for table in oracle

Asked by: vinodkumarn37

I have two tables
mytable with 'id' and 'message' as the columns and id as the primary key.
and fktable with 'id' and 'message' as the columns and id as the foreign key.

how can I create a trigger to 'mytable' so that the same value of the id field should be updated in the fktable's foreign key.



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Asked On
2009-02-21 at 18:26:36ID24165520
Tags

trigger

,

primary key

,

foreign key

Topics

Oracle CRM

,

PL / SQL

Participating Experts
1
Points
500
Comments
2

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Answers

 

by: vinodkumarn37Posted on 2009-02-21 at 20:42:41ID: 23703304

Can any one help me creating the trigger for the tables i posted

 

by: imran_fastPosted on 2009-02-21 at 22:47:01ID: 23703558

CREATE OR REPLACE TRIGGER OWNER.TRG_UPD_MSG AFTER UPDATE ON OWNER.MYTABLE FOR EACH ROW
BEGIN  
     
  IF :OLD.MESSAGE <> :NEW.MESSAGE THEN
    UPDATE OWNER.FKTABLE SET MESSAGE = :NEW.MESSAGE WHERE ID = :OLD.ID;
  END IF;
END;

                                              
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